US3085209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-band differential amplification
Assignee: Individual
•
Filing: 1956-04-05
•
Granted: 1963-04-09
•
Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Carlson Arthur William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:19
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A METHOD OF ADDING ONE SIGNAL VOLTAGE TO ANOTHER FOR THE PURPOSE OF SUPPLYING A SUM SIGNAL TO A SINGLE CHANNEL OSCILLOSCOPE IN COMPUTING AND SERVOMECHANISM OPERATIONS COMPRISING THE STEPS OF CONNECTING TWO CLASS A AMPLIFIER TUBES OF EQUAL TRANSCONDUCTANCE IN SERIES ARRANGEMENT, THE FIRST SAID AMPLIFIER TUBE HAVING ITS ANODE CONNECTED TO A POTENTIAL SOURCE AND ITS CATHODE DIRECTLY COUPLED TO THE ANODE OF SAID SECOND AMPLIFIER TUBE AND SAID SECOND AMPLIFIER TUBE HAVING ITS CATHODE CONNECTED TO GROUND, APPLYING A FIRST SIGNAL VOLTAGE TO THE GRID OF SAID FIRST AMPLIFIER TUBE AND A SECOND SIGNAL VOLTAGE IN PHASE WITH SAID FIRST SIGNAL VOLTAGE TO THE GRID OF SAID SECOND AMPLIFIER TUBE, AND OBTAINING AN OUTPUT SIGNAL VOLTAGE BETWEEN THE ANODE OF SAID SECOND AMPLIFIER TUBE AND GROUND WHICH IS RESPONSIVE TO THE SUM OF SAID FIRST AND SECOND SIGNAL VOLTAGES.
Claim 2
Independent Claim
142 words
A METHOD OF ADDING ONE SIGNAL VOLTAGE TO ANOTHER FOR THE PURPOSE OF SUPPLYING A SUM SIGNAL TO A SINGLE CHANNEL OSCILLOSCOPE IN COMPUTING AND SERVOMECHANISM OPERATIONS COMPRISING THE STEPS OF CONNECTING TWO CLASS A AMPLIFIER TUBES OF EQUAL TRANSCONDUCTANCE IN SERIES ARRANGEMENT, THE FIRST SAID AMPLIFIER TUBE HAVING ITS ANODE CONNECTED TO A POTENTIAL SOURCE AND ITS CATHODE DIRECTLY COUPLED TO THE ANODE OF SAID SECOND AMPLIFIER TUBE AND SAID SECOND AMPLIFIER TUBE HAVING ITS CATHODE CONNECTED TO GROUND, APPLYING A FIRST SIGNAL VOLTAGE TO THE GRID OF SAID FIRST AMPLIFIER TUBE AND A SECOND SIGNAL VOLTAGE IN PHASE WITH SAID FIRST SIGNAL VOLTAGE TO THE GRID OF SAID SECOND AMPLIFIER TUBE, AND OBTAINING AN OUTPUT SIGNAL VOLTAGE BETWEEN THE ANODE OF SAID SECOND AMPLIFIER TUBE AND GROUND WHICH IS RESPONSIVE TO THE SUM OF SAID FIRST AND SECOND SIGNAL VOLTAGES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |